Phobos Orbits Mars Eastward with a Shorter Period Than Mars

Multiple Choice

Phobos orbits Mars eastward with a shorter period than Mars takes to rotate on its axis (also eastward) . As a consequence Phobos is:

A) ahead of the tidal bulge it raises on Mars, so that Phobos is slowly drifting away from Mars.
B) ahead of the tidal bulge it raises on Mars, so that Phobos is slowly drifting toward Mars.
C) behind the tidal bulge it raises on Mars, so that Phobos is slowly drifting away from Mars.
D) behind the tidal bulge it raises on Mars, so that Phobos is slowly drifting toward Mars.